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182 lines
7 KiB
HTML
182 lines
7 KiB
HTML
<html>
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<head> <title>AGC/ERDC HDFView PLUGIN Overview</title><head>
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<body>
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<h1><center>Data Management with HDF5 for Military Operations<br/>
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AGC/ERDC HDFView Prototype</center></h1>
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<br/><br/>
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<center>
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<table border="0">
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<tr>
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<td width="10%"></td>
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<td bgcolor="#FFFFDD">
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<strong>This research effort is supported by the BAA project entitled
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"Research on Data Management with HDF5 in Support of Military Operations". The
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concept map prototype is a result of collaboration between The HDF Group and the AGC
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(Army Geospatial Center) Engineer Research & Development Center (ERDC) Research Division.</strong>
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</td>
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<td width="10%"></td>
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</tr>
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</table>
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</center>
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<hr>
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<ul>
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<li> <a href="#introduction">Introduction</a>
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<li> <a href="#install">Download and install the plugin</a>
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<li> <a href="#files">Testing files</a>
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<li> <a href="#browse">Browse through the map</a>
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<li> <a href="#edit">Add new node</a>
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</ul>
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<hr>
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<a name=introduction></a>
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<h2> 1. Introduction</h2>
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<p>
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Military mission operations may involve massive data processing operations and deal with a great
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variety of heterogeneity in the types of information. This section explains
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an example use case of how the information could be conceiveably presented in HDF5. The use case is
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concerned with capturing the structure and resources attached to a sample
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concept map. The concept map is an abstraction and representation of the
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pattern and flows represented by the structure and content of a set of nodes and of
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the resources associated with each node. There are three types of data
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files associated with this concept map: the raw data,
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the functional map file, and other heterogenous objects (in external files or
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links).
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<p/>
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<table border="1">
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<caption align="bottom">Figure 1 -- The concept map shown in general HDFView (left)
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and in ERDC plugin (right)</caption>
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<tr><td><img src="snapshot_compare.gif"></img></td></tr>
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</table>
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<p />
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The HDF5 concept map captures the structure of information (nodes)
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and resources attached to each node. The left part of Figure 1 is a snapshot
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of the sample concept map shown in the default HDFView.
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<p />
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HDFView has a plugin capability that enables specialized graphical user
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interfaces (GUIs) to be created to display a file's contents in a way that
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corresponds to a particular application domain. Thus, an HDFView plugin
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GUI can be implemented to display HDF5 data in alternative ways to show how data integration
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is achieved, and also be adapted to perform simple data fusion operations. A
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demonstration of these capabilities will help illustrate the results of this
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study and in stimulating ideas for the next phase of work.
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<p>
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By opening the concept map, the ERDC plugin shows the concept map in a directed
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graph format that represents a notional military decision making process. Instead of showing
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a standard file based group structure as in figure 1 (left), the ERDC plugin shows the flow of
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information and relationships among the data objects, shown in figure 1 (right). The
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labeled shapes represent concepts and the arrows represent relationships (i.e. links) among
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the concepts. This concept map depicts the top-level of a decision tree process,
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where the shapes are icons representing associated resources that can take
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many forms: images, documents, websites, videos, executable software, and etc.
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<p />
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In figure 1 (right), the rectangle, diamond, and circle shapes represent the groups
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(or collections) of information. The leaf nodes at the bottom (oval shaped)
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link to the datasets in the raw data file. For example, the bldg_footprint
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node links to the dataset, "/Baltimore/Features/LIDAR/bldg_footprint". Other
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leaf nodes connected by dashed arrows are the links to external files/objects.
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<p/>
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Links to external files/objects are represented in attributes in the concept
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map file. The links work in <MIME, URI> pairs. For example, <"MIME =
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application/vnd.ms-excel ", "URI = Situation_Weather-XLS.xls"> pair indicates
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that the URI is a link to an external Excel file. Table 1 shows all the links
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of the OCOKA concept group.
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<p />
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<table border="1">
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<caption align="top">Table 1 -- External objects linked to OCOKA group</caption>
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<tr>
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<th>MIME</th>
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<th>URI</th>
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</tr>
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<tr>
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<td>MIME = application/vnd.ms-excel</td>
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<td>URI = Situation_Weather-XLS.xls</td>
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</tr>
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<tr>
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<td>MIME 2 = application/x-hdf</td>
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<td>URI 2 = ATO.h5#///Baltimore/Features/UTP/BTZones/residential</td>
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</tr>
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<tr>
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<td>MIME 3 = application/x-hdf</td>
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<td>URI 3 = URI 3 = URBAN_ATO.h5#///Baltimore/Features/LIDAR/bldg_footprint</td>
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</tr>
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</table>
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<p />
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<a name=install></a>
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<h2> 2. Download and install the plugin</h2>
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<p>
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The prebuilt binaries of the ERDC plugin will be distributed in a single
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jar file. To use the plugin, follow the instructions below.
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<ol>
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<li> Download and install HDFView 2.5p1 or above from ftp://ftp.hdfgroup.org/HDF5/hdf-java/v25p3/
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<li> Drop the ERDC jar file, erdc.jar, at $HDFView_HOME/lib/ext
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<li> Open HDFView and select the erdc.TreeViewERDC and erdc.ImageViewERDC as the default TreeView and
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ImageView from "Tools" -> "User Options" -> "Default Module".
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<li> Restart HDFView
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</ol>
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<a name=files></a>
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<h2> 3. Testing files</h2>
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You will need the following files to run the plugin demonstration. All the files must be in the same directory.
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<ol>
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<li> concept_map_demo.h5 (10KB) - the concept map
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<li> URBAN_ATO.h5 (1.3GB) - the raw data
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<li> Recon_Immersive-Video.avi (9MB) - demo video file
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<li> Events_Intel-Report.pdf (224KB) - demo pdf file
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<li> Situation_Weather-XLS.xls (249KB) - demo Excel spreadsheet
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</ol>
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<a name=browse></a>
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<h2> 4. Browse through the concept map</h2>
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<p>
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After you open the concept map file, concept_map_demo.h5, you will see
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the map structure on the left side and the base image on the right side.
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<p>
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<table border="1">
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<caption align="bottom">Figure 2 -- Concept map shown in ERDC plugin</caption>
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<tr><td><img src="snapshot_plugin.gif"></img></td></tr>
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</table>
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<h3> Nodes and links</h3>
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<p>
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Internal nodes (green rectangle, orange diamond, and grey circle) represent
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groups in the concept map file. Links (solid or dashed) represent connections
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and/or associations amongst the objects.
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<p>
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Right-mouse click on an internal node/link to show the information about the node/link.
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You can also drag the mouse to move nodes to a different location.
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<h3> Open data content</h3>
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<p>
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The bottom leaf nodes are linked to datasets in the raw data file, URBAN_ATO.h5.
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Right-mouse click on a leaf node to view the content of the dataset in table or image.
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<p>
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Right-mouse click external leaf nodes, such as video, excel, or pdf, to open the
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the content of the external file.
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<a name=edit></a>
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<h2> 5. Add a new node </h2>
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<p>
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To interactively create a new node (object), click on an icon in the toolbar and select a location where the
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new item is to be added.
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<p>
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Double click on the new object to change its name.
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Use the mouse-drag to move the new object to a different location.
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<p>
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<hr>
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<img src="hdf_logo.jpg">       </img><img src="agc_logo.jpg"></img>
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</body>
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</html>
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